Fault deciding system for idle revolution controlling unit
    1.
    发明授权
    Fault deciding system for idle revolution controlling unit 失效
    空转控制单元故障判定系统

    公开(公告)号:US5906184A

    公开(公告)日:1999-05-25

    申请号:US943619

    申请日:1997-10-03

    摘要: When fully closed throttle opening learning device M1 learns a fully closed throttle opening value THMIN on the basis of an actual throttle opening value TH at an idle running time, comparison device M2 compares the sum of the fully closed throttle opening value THMIN and a predetermined value a with the actual throttle opening value TH to decide the possibility of the occurrence of a fault, and fault decision acceptance device M3 decides the acceptance/rejection of execution of the fault decision of an idle revolution controlling unit IC on the basis of the comparison result of the comparison device M2. As a result, even with a degradation in the output characteristics of a throttle opening sensor, an erroneous decision can be avoided by rejecting the execution of the fault decision when there is a possibility of an erroneous decision.

    摘要翻译: 当全闭合节气门开度学习装置M1基于怠速行驶时的实际节气门开度值TH学习完全关闭的节气门开度值THMIN时,比较装置M2将完全关闭的节气门开度值THMIN和预定值 a,以确定发生故障的可能性的实际节气门开度值TH,故障判定接收装置M3根据比较结果决定空转革命控制单元IC的故障判定的执行的接受/拒绝 的比较装置。 结果,即使在节气门开度传感器的输出特性的劣化的情况下,当存在错误判定的可能性时,也可以通过拒绝执行故障判定来避免错误的判定。

    Method and apparatus for diagnosing a vehicle
    3.
    发明授权
    Method and apparatus for diagnosing a vehicle 失效
    用于诊断车辆的方法和装置

    公开(公告)号:US06442458B2

    公开(公告)日:2002-08-27

    申请号:US09728490

    申请日:2000-12-04

    IPC分类号: G01M1700

    摘要: A diagnostic apparatus for a vehicle can display diagnostic results and an indication of whether or not the diagnosis has been completed with a single display device. The diagnostic apparatus adapted to be mounted on the vehicle for diagnosing the vehicle based on driving condition parameters of the vehicle includes a display device or an indicator for indicating presence or absence of malfunction based on the diagnostic results, means for switching the diagnostic apparatus into a notification mode in response to a predetermined operation state, and a display control unit for displaying on the display device the indication of whether or not the diagnosis has been completed in response to being switched into the notification mode. The indication of whether or not the diagnosis has been uncompleted can be displayed on the display device by switching into a notification mode in response to the predetermined operation status. The display device may be a lamp provided near a driver's seat in the vehicle, and the indication of whether or not the diagnosis has been completed may be effected by blinking the lamp.

    摘要翻译: 用于车辆的诊断装置可以显示诊断结果以及用单个显示装置是否已经完成了诊断的指示。 基于车辆的驾驶状况参数,适于安装在车辆上用于诊断车辆的诊断装置包括基于诊断结果的显示装置或指示有无故障的指示器,用于将诊断装置切换为 响应于预定操作状态的通知模式;以及显示控制单元,用于响应于切换到通知模式,在显示装置上显示诊断是否已经完成的指示。 通过响应于预定的操作状态切换到通知模式,可以在显示装置上显示诊断是否未完成的指示。 显示装置可以是设置在车辆的驾驶员座椅附近的灯,并且诊断是否完成的指示可以通过使灯点亮来实现。

    System for preventing overheat of engine for vehicle
    4.
    发明授权
    System for preventing overheat of engine for vehicle 失效
    用于防止车辆发动机过热的系统

    公开(公告)号:US5065705A

    公开(公告)日:1991-11-19

    申请号:US551980

    申请日:1990-07-12

    摘要: A system for preventing overheating of an engine for a vehicle includes a revolution rate detector for detecting the rate of revolution of the engine carried on the vehicle, a device for reducing an engine power output in response to a value detected in the revolution rate detector exceeding a preset revolution rate, a device for predicting overheating of the engine, and a preset revolution rate correcting device for reducing the preset revolution rate in accordance with a reduction of the vehicle velocity in reply to prediction of an engine overheat condition by the overheat predicting device. An overheating due to an engine racing condition during vehicle travelling is prevented in view of an engine cooling effect provided by flowing air.

    摘要翻译: 一种用于防止车辆发动机过热的系统包括用于检测车辆所承载的发动机的转速的转速检测器,用于根据转速检测器中检测到的值来减小发动机功率输出的装置超过 预设转速,用于预测发动机过热的装置,以及用于根据过热预测装置对发动机过热状态的预测,根据车速的降低而降低预设转速的预设转速校正装置 。 考虑到由流动的空气提供的发动机冷却效果,防止了由于在车辆行驶期间的发动机赛车状态而导致的过热。

    Air-fuel ratio control method for internal combustion engines
    6.
    发明授权
    Air-fuel ratio control method for internal combustion engines 失效
    内燃机空燃比控制方法

    公开(公告)号:US4877006A

    公开(公告)日:1989-10-31

    申请号:US239786

    申请日:1988-09-01

    IPC分类号: F02D41/00 F02D41/10 F02D41/14

    摘要: A method of controlling the air-fuel ratio of a mixture of fuel supplied to an internal combustion engine. Feedback control is effected to response to an output from an exhaust-gas concentration sensor to bring the air-fuel ratio to a predetermined value when the engine is in a predetermined medium-load operating region. It is determined whether or not the engine is in a predetermined high-load operating region in which the feedback control is interrupted for bringing the air-fuel ratio to a value smaller than the predetermined value, and whether or not the engine is in a predetermined low-load operating region in which the feedback control is interrupted for bringing the air-fuel ratio to a value larger than the predetermined value. The feedback control is effected even when the engine is in the predetermined low-load operating region, if the engine continually stayed over a first predetermined time period in the predetermined high-load operating region, and has shifted to the low-load operating region within a second predetermined time period after leaving the predetermined high-load operating region.

    摘要翻译: 一种控制供给内燃机的燃料混合物的空燃比的方法。 当发动机处于预定的中负荷运行区域时,进行反馈控制以响应来自排气浓度传感器的输出,以使空燃比达到预定值。 确定发动机是否处于反馈控制中断的预定高负载运行区域中,以使空燃比小于预定值,并且发动机是否处于预定的 其中反馈控制被中断以使空燃比达到大于预定值的值的低负载工作区域。 即使在发动机处于规定的低负荷运转区域的情况下,如果发动机在规定的高负荷运转区域内连续停留超过第一规定时间,也转移到低负荷工作区域内的低负荷运转区域, 在离开预定的高负载运行区域之后的第二预定时间段。

    Idling speed feedback control method for internal combustion engines
    7.
    发明授权
    Idling speed feedback control method for internal combustion engines 失效
    内燃机空转速度反馈控制方法

    公开(公告)号:US4640244A

    公开(公告)日:1987-02-03

    申请号:US780559

    申请日:1985-09-26

    CPC分类号: F02D31/003

    摘要: An idling speed feedback control method for an internal combustion engine for controlling the operating amount of a control valve for regulating the quantity of intake air being supplied to the engine in response to the difference between a desired idling speed and an actual engine speed, while the engine is in a predetermined idling region. A correction value for the operating amount of the control valve is determined in dependence upon the valve of a signal indicative of generating conditions of a generator driven by the engine for supplying electric power to at least one electrical device, and the operating amount of the control valve is corrected by means of the thus determined correction value. When the engine has entered the predetermined idling region immediately following deceleration, an initial value of the operating amount of the control valve which is applied at the start of the feedback control is set to a sum of a value obtained by correcting the correction value by means of a predetermined increment, and a predetermined reference value. While the engine is decelerating toward the predetermined idling region, the operating amount of the control valve is set to a value equal to the initial value.

    摘要翻译: 一种用于内燃机的空转速度反馈控制方法,用于响应于期望怠速和实际发动机转速之间的差异来控制用于调节供应给发动机的进气量的控制阀的操作量,同时 发动机处于预定的空转区域。 控制阀的操作量的校正值根据表示由发动机驱动的发电机的发电条件的信号的阀来确定,发动机用于向至少一个电气设备供电,以及控制器的操作量 通过如此确定的校正值校正阀。 当发动机已经进入紧随减速之后的预定怠速区域时,将在反馈控制开始时施加的控制阀的操作量的初始值设定为通过装置校正校正值而获得的值的和 预定增量和预定参考值。 当发动机朝向预定的怠速区域减速时,控制阀的操作量被设定为等于初始值的值。

    Knocking control system for internal combustion engines
    9.
    发明授权
    Knocking control system for internal combustion engines 失效
    内燃机爆震控制系统

    公开(公告)号:US4960095A

    公开(公告)日:1990-10-02

    申请号:US417229

    申请日:1989-10-04

    摘要: A knocking control system for an internal combustion engine with the inlet valves and exhaust valves having valve timing thereof controlled depending on operating conditions of the engine. It is determined whether or not knocking has occurred in the engine on the basis of a detection parameter indicative of knocking and at least one discrimination parameter. The operation of the engine is controlled by the use of at least one control parameter in response to the determination result. The values of the discrimination and control parameters arfe selected in accordance with the actual valve timing. The detection parameter is a level of vibration of the engine comprising a noise component and a knocking component. It is determined that knocking has occurred when the level of the knocking component is higher than one knocking discrimination level set based on the level of the noise component and the discrimination parameter irrespective of the actual valve timing. The discrimination parameter includes correction terms set to such values as to obtain the one knocking discrimination level, by being multiplied by and added to the level of the noise component, respectively.

    摘要翻译: 一种用于内燃机的爆震控制系统,其具有根据发动机的运行条件控制的进气阀和排气门。 基于指示爆震的检测参数和至少一个判别参数来确定发动机中是否发生了爆震。 通过响应于确定结果使用至少一个控制参数来控制发动机的操作。 根据实际气门正时选择鉴别和控制参数值。 检测参数是包括噪声分量和爆震分量的发动机的振动水平。 确定当爆震分量的水平高于基于噪声分量的水平和鉴别参数而设定的一个敲击判别水平时,发生了爆震,而与实际气门正时无关。 鉴别参数包括通过分别乘以噪声分量的水平并将其加到噪声分量的水平上而设置为获得一个敲击判别水平的值的校正项。

    Fuel supply control method for internal combustion engines
    10.
    发明授权
    Fuel supply control method for internal combustion engines 失效
    内燃机燃油供应控制方法

    公开(公告)号:US4819604A

    公开(公告)日:1989-04-11

    申请号:US131225

    申请日:1987-12-10

    CPC分类号: F02D41/32 F02D41/0087

    摘要: A method of controlling the supply of fuel to an internal combustion engine having first and second fuel injection valves arranged in the intake passage downstream and upstream of the throttle valve, respectively, both being upstream of the intake manifold wherein the first and second fuel injection valves are selectively operated to supply fuel to the cylinders in dependence on operating conditions of the engine. Fuel is supplied to a plurality of cylinders of the engine through the first fuel injection valve alone when the engine is operating in a predetermined low load condition. In a middle/high load middle speed region of the engine, a substantially constant minimum required quantity of fuel is supplied through the first fuel injection valve, and simultaneously a quantity of fuel appropriate to the middle/high load middle speed region is supplied through the second fuel injection valve. In a high load high speed region of the engine, if a time interval of generation of a signal generated at predetermined crank angles of the engine is longer than the fuel injection period of the second fuel injection valve, a quantity of fuel corresponding to a difference therebetween is supplied through the first fuel injection valve and simultaneously a quantity of fuel corresponding to the time interval is supplied through the second fuel injection valve.

    摘要翻译: 一种控制向内燃机供应燃料的方法,所述内燃机具有分别设置在所述进气通道的下游和上游的所述进气通道中的位于所述进气歧管的上游的第一和第二燃料喷射阀,其中所述第一和第二燃料喷射阀 被选择性地操作以根据发动机的操作条件向缸提供燃料。 当发动机在预定的低负载状态下运行时,单独通过第一燃料喷射阀将燃料供给到发动机的多个气缸。 在发动机的中/高负载中速区域中,通过第一燃料喷射阀供给基本恒定的最小所需量的燃料,同时通过所述第一燃料喷射阀供应适合于中/高负载中速区域的燃料量 第二燃油喷射阀。 在发动机的高负荷高速区域中,如果在发动机的预定曲轴角度处产生的信号的产生时间间隔长于第二燃料喷射阀的燃料喷射期间,则对应于差异的燃料量 其间通过第一燃料喷射阀供给,同时通过第二燃料喷射阀供给与时间间隔对应的一定数量的燃料。